Adam Brody is reflecting on the life lessons he’s learned from his more than a decade-long marriage to Leighton Meester. “That there’s a duality in all of us,” Brody, 46, told Elle of the wisdom he’s picked up from marriage. “Oftentimes, I feel mature and responsible, and other times, I feel like a little boy still, and I can’t believe I’m the age I am.” He continued, “But I think what I’ve learned is, if you want it to last and you’re taking it seriously, there’s a certain level of humbling yourself that is required. You have to be willing to adjust. Not change the core of...